Procaryotic Genera
   Domain "Bacteria" Woese et al. 1990 stat. inval. see Domain Bacteria Woese et al. 2024
     Phylum Proteobacteria Garrity and Holt 2001 nom. nud. see Phylum Proteobacteria Garrity et al. 2005 stat. inval.
       Class "Alphaproteobacteria" "Garrity and Holt 2001" nom. nud. see Class Alphaproteobacteria Garrity et al. 2006
         Order "Rhodobacterales" "Garrity and Holt 2001" nom. nud. [monotypic] see Order Rhodobacterales Garrity et al. 2006
           Family "Rhodobacteraceae" "Garrity and Holt 2001" nom. nud. see Family Rhodobacteraceae Garrity et al. 2006 nom. illeg.
             Genus Rhodobacter Imhoff et al. 1984
             Genus Ahrensia Uchino et al. 1999
             Genus Amaricoccus Maszenan et al. 1997
             Genus Antarctobacter Labrenz et al. 1998
             Genus Gemmobacter Rothe et al. 1988
             Genus Hirschia Schlesner et al. 1990
             Genus Hyphomonas (ex Pongratz 1957) Moore et al. 1984
             Genus Maricaulis Abraham et al. 1999
             Genus Methylarcula Doronina et al. 2000
             Genus Octadecabacter Gosink et al. 1998
             Genus Paracoccus Davis 1969 (Approved Lists 1980)
             Genus Rhodovulum Hiraishi and Ueda 1994
             Genus Roseibium Suzuki et al. 2000
             Genus Roseinatronobacter Sorokin et al. 2000
             Genus Roseobacter Shiba 1991
             Genus Roseovarius Labrenz et al. 1999
             Genus Rubrimonas Suzuki et al. 1999
             Genus Ruegeria Uchino et al. 1999
             Genus Sagittula Gonzalez et al. 1997
             Genus Staleya Labrenz et al. 2000 see Genus Sulfitobacter Sorokin 1996
             Genus Stappia Uchino et al. 1999
             Genus Sulfitobacter Sorokin 1996
             Genus Roseivivax Suzuki et al. 1999